O'Sullivan

O'Sullivan may refer to:

People

 * O'Sullivan family, a gaelic Irish clan
 * O'Sullivan (surname), a family name
 * Sullivan (surname), a variation of the O'Sullivan family name

Places

 * O'Sullivan Dam, Washington, United States
 * O'Sullivan Army Heliport, California, United States
 * O'Sullivan Beach, South Australia
 * O'Sullivan Peak (Utah), United States
 * O'Sullivan River, Quebec, Canada

Other uses

 * O'Sullivan College, a private university in Canada
 * O'Sullivan Ladies Open, an LPGA golf tournament
 * O'Sullivan test, a diabetes screening test
 * O'Sullivan v Noarlunga Meat Ltd, a series of Australian High Court cases